Specification BikeType : Road Bike, Mountain Bike, Hybrid Bike, City Bike BikeType1 : Mountain Bike BikeType2 : Road Bike Brand : Duro BulletPoint1 : Bicycle Inner Tube BulletPoint2 : American/Schrader 33mm Valve BulletPoint3 : HEAVY DUTY - Air Tightness: Using high elasticity and high quality butyl rubber and EPDM rubber, the thickness is increased by 40%, and the air tightness of the inner tube is increased by 200% than that of the ordinary butyl inner tube; After inflation, the tire can maintain a higher air pressure for 6-9 months, greatly reducing the inflation frequency. Good air tightness helps keep tire pressure stable, thus improving driving safety. BulletPoint4 : This heavy duty inner tube is compatible with the corresponding models of mountain bikes, road bikes, Cruiser bikes, electric bikes; At the same time, the increase in thickness can meet the needs of the longer driving range and load of the prevailing electric bicycles. BulletPoint5 : Excellent shock absorption ability :The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement. Heavy Duty butyl rubber for maximum ride comfort - upgrade your ride experience. BulletPoint6 : Installation:12"/12.5"x1.75"/2.25" bicycle heavy duty replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct. BulletPoint7 : Tip:Before installing the inner tube, please put the inner tube into the water for inspection, if there are bubbles, it means that it has been damaged, you can contact us. Check the valve position to ensure that the installation direction is correct. Note: The inflatable inner tube should avoid puncture by sharp objects. BulletPoint8 : We hope to do better in terms of tire quality in order to provide you with better service and satisfactory products. If you have any questions about product quality within a year, you can contact us. You need to provide relevant pictures and information so that we can respond quickly and save you valuable time Color : 2 Pack Saver CompatibleTireWidthMaximum : 48.26 millimeters CompatibleTireWidthMinimum : 38 millimeters ExternallyAssignedProductIdentifier1 : 0811472035168 ExternallyAssignedProductIdentifier2 : 811472035168 ExternallyAssignedProductIdentifier3 : 00714983406888 GpsrSafetyAttestation : 1 ImportDesignation : Made in China IncludedComponents : no ItemDisplayDimensions_Height : 6 inches ItemDisplayDimensions_Length : 6 inches ItemDisplayDimensions_Width : 6 inches ItemDisplayWeight : 1 pounds ItemName : Duro Bicycle Tube 16" x 1.50"/1.75/1.90" (33mm) Standard American/Valve ItemPackageDimensions_Height : 18.0086 centimeters ItemPackageDimensions_Length : 11.9888 centimeters ItemPackageDimensions_Width : 13.0048 centimeters ItemPackageQuantity : 2 ItemTypeKeyword : bike-tubes ItemWidth : 4 inches Manufacturer : F & R Cycle Inc. Material : Rubber or rubber-like material ModelName : 26 ModelNumber : YunSCM2021071902 NumberOfItems : 1 PackageLevel : unit PartNumber : 250-202 ProductDescription : Bicycle Bicycle Inner Tube , Use With Bicycle Tire ProductSiteLaunchDate : 2018-03-13T07:00:00.000Z Size : 26 Style : 60mm-2pcs SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable UnspscCode : 25172500 ValveLength : 1.25 inches ValveType : Schrader WarrantyDescription : 3 Months